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Time Warp Simulation of Stochastic Petri Nets.

Ammar, Hany H.; Deng, Su

In: Proc. 4th Int. Workshop on Petri Nets and Performance Models (PNPM'91), Melbourne, Australia, pages 186-195. IEEE Comp. Soc. Press, December 1991.

Abstract: This paper addresses the problem of developing parallel simulation techniques to analyze complex Stochastic Petri Net (SPN) models. The approach of parallel simulation is to divide a general SPN spatially into several connected subnets.The various subnet-works are simulated in parallel by several logical processes (LPs) which synchronize. The rich and complex structure of Petri Nets necessitates the development of an algorithm which can handle general forms of network partitions. In this paper, an algorithm based on the Time Warp strategy for optimistic parallel simulation is presented. Time scale decomposition is also used with spatial decomposition to induce parallelism and reduce synchronization overhead. An example of performability analysis using both spatial and time-scale decomposition is presented.

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